tcg: Introduce tcg_remove_ops_after

Introduce a function to remove everything emitted
since a given point.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/tcg/tcg.c b/tcg/tcg.c
index 81da553244..ca482c2301 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -2083,6 +2083,19 @@ void tcg_op_remove(TCGContext *s, TCGOp *op)
 #endif
 }
 
+void tcg_remove_ops_after(TCGOp *op)
+{
+    TCGContext *s = tcg_ctx;
+
+    while (true) {
+        TCGOp *last = tcg_last_op();
+        if (last == op) {
+            return;
+        }
+        tcg_op_remove(s, last);
+    }
+}
+
 static TCGOp *tcg_op_alloc(TCGOpcode opc)
 {
     TCGContext *s = tcg_ctx;